Engine.



s. 0'. e'oULDl ENGINE.

' i APPLICATION FILED JULY Z9,l 1911. v .Lw v Patented Feb. 23, 1915.

2 SHEETS-SHEET 1.

b m y u N Witnesses Attorneys I S. O. GOULD.

ENGINE. APPLICATION P ILED JULY 29, 1911.

Patented 111911.23, 1915.

2 SHEETS-SHEET 2.

lnvento www .1111@11 Attorneys sYLvnsTnR o.- GoULn-or ivnLiRIoN,`INDANA..

Maanen."l d

ENGINE.

' Application filed July 29, 1911. l Seriai No. 641,284.

To 'all fwhom it may concern.'

Be 1tA known that I, SYLVESTER O. GoULD, a citizen of the United States,residing at Marion, in the county of Grant and State of Indiana,- haveinvented a new land useful lflngine, of which the following is alspeciv. ffication.

It is the object of the present invention to provide an engine having asingle cylinder,

' prove generally,

vappearing in Fig. 3.

1n carrying'- out the invention there is pro* vin which a pair ofpistons operate, under the impulse of fluid-pressure delivered between,'A them, to secure the rotation of a single drive isha a novel form ofvalve mechanism being vided, and novel means being include hereby a deadcenter will be overcome A. 'further object of the invention is toiindevices of the type to which the invention app'ertains, and toincrease the eiciency of an engine ofthe type herein disclosed. l.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the com-v bination andarrangement of parts `and in the details of construction yhereinafterdescribed and claimed, it being vunderstood that changes in the`vprecise embodiment of invention lherein disclosed can be made withinthe scope of what is claimed without departing from' the spirit of theinvention.

In' the accompanying ydrawings,-l*`igure ,1` shows the invention inlongitudinal sec tion, parts appearing in elevation; Fig. 2 is a sideelevation; Fig. 3 is-a sectional elevation at right angles to theshowing of Fig. 1; and Fig. 4 is an elevation at right angles to theshowing'of Fig. 2, and depicting an opposite'side of the engine fromthat vided a cylinder 1, open at both-ends, and jacketed, as shown at 2,the cylinder 1 being formed, preferably, integrally with a base 3, towhich the crank case 4vis secured. The jabket 2 is formed at one side`with a combustion chamber 5,.

Mounted for reciprocation in the cylinder 1, are pistons 6 and 7, thepiston 6 being operatively connected with the pitnian 8, pivoted to oneend of a Walking beam 9, fulcrumed intermediate its ends, as shown at10, upon a standard 11,'fashioned upon any suitable `or accessibleportion of the engine structure.

Y To the outer end of the walking beam 9,

'acfuate the stem 35.

is pivotedlthe upper end of an upiiglit'connecting rod 12the lower endof which is pivotedto one arm of a bell crank 14, fulcruined upon ashaft 15, carried by the base 3. The other arm of the bell crank 14 ispivotally united withl a horizontally disposedconnecting rod 16,operatively connected with a crank 17, fashioned in a crank shaft 1S,liournaled for rotation in mating bearings 19, formed in the'base 3 andin the crank case 4, the shaft 1S carrying the fly wheel20, andconstituting the drive shaft of the engine... A pitman21 is alsooperatively connected with the crank 17, the upper end of the oitman 21being connected with the piston v v.

To the crank shaft 18 is secured a pinion 22, meshing into a larger gearwheel 23, se-l cuied to a'cam shaft 24, journal'ed for rotation in thebase 3.

The shaft 24 carries a pair of spaced cams 25' and 26, angularlydisposed with respect to each other, ,as clearly shown in Fig. 1. Thecam 25 is adapted to engage one end of a lever 27, which is fulcruinedadjacent its outer end, as shown at 23, in the base 3. Thecam 26 visadapted to engage a similar 'lever 29, as. Fig. 3 will show. vThe lever27 is adapted to engage an upright plunger 30, and the lever 29 isadapted to engage an upright ,plunger 31, the plungers 30 and 3l beingslidably mounted in bosses 32, formed inthe base 3. y

The plungers 30 and 3l are adapted to bear against heads 33, .formedupon the ends of valvestems 34 and 35, slidably mounted in the lowerportion of the combustion chamber 5, the lplunger 30 serving to actuatethe stein 3.4, and the plunger 31 serving to The stem 34 carries a valve36, and the stem 35 carries a valve 37,

adapted to register in seats 38, formed in a transverse portion 39,located withinthe combustion chamber 5f, the combustion chamber, abovethe partition, communicating with the interior of the cylinder 1, as

shown at 40. Compression springs 44 surround the valve stems 34 and 35,the springs 44 bearing at their upper ends against the lower face of thecombustion chamber 5, the lower ends of the springs bearing againsttheheads 33. The action of the springs 44, therefore, is to maintain thevalves 36 and 37 seated.

Mounted in the upper portion of the combustion chamber 5, or in anyother desired vice having thesame function. In one side of thecombustion chamber 5 there is, below the partition 89, an inlet port 42,an oppositely disposed/exhaust port 43 being located in the oppositeside of th'e ycombustion chamber.

Presupposing that the parts are positioned as shown in Fig. 1, theoperation of the device is as follows: When the charge is explodedbetween the pistons 6 and 7, the

pistons will be forced apart in opposite directions. The piston 6,through the instrumentality of the pitman 8, will tilt the walkbeam 9upon its fulcrurn 10, the Walking b'ea1n9, by means of the connectingrod 12,

the bell crank 14:, the bell crank operating the connecting rod 16, andthe connecting rod 16, through the medium of the crank 17, causingarotation of the shaft 18. When the piston descends, the pitman 21section thereof, is a spark p lug 4:1 or like deeach cam including acurved lifting edge A and an edge disposed radially of the shaft,

will actuate the'crank'l,l and aid in the rotation of the shaft 18.Thus, both the pistons 6 and 7 Will operate to turn the shaft 18. InFig. 1, the pitman 21 is shown as being upon dead center, but it will beseen that the bell crank14 is so positioned, that the operation of thepiston 6 will serve to prevent a dead centering of the engine as an'entity, the connecting rod 16 and the pitman 2l never being upon deadlcenters, at the `same time. When the pistons 6 and 7 separate, in themanner hereinbefore described, the pinion 9") l AA I I wheel Q3, willcause a rotatlon of the cam s 'aft 24, the cam 25, in ,the firstinstance, en-` gaging the lever 27,-and raising the plunger the plunger30 elevating the valve stem 34,- and unseatingthe valve 36, whereuponthe pistons 6 and' 7, as they separate, will meshing into the gear drawinwardly thiough the inlet port 42, the l By the time that the 'pistons6 and 7 start to approach each other, the valve 36 will have-closed. andthe appreaching pistons w11l comme and com- 41% tons 6 and 7, and whenthe pistons again 50 approach each other, the cam 26 Will actuate thelever 29, raising the plunger 31, and operating the stern 35, effecting`an unseating of the valve 37, the exploded charge being forcedoutwardly, through the exhaust 55' port 48. Having thus described theinvention, what is claimed is l In a device of the class described, aShaft y .i having a .plurality of cams; levers ul- 60. .crumed at theirouter ends; a slidably mounted pin b earing upon each lever between thefulcrum of the lever and the cams; and a valve actuated by each pin;

the eXtreme' inner end of each lever being adaptedto traverse the`lifting edge of one cam, and to drop abruptly to the rear of the radialedge thereof thereby to effect a sudden release of the correspondingpins, the radial edgeof one cam belng spaced from the lifting edge ofthe next cam by a surface concentric with vthe shaft, upon v whichsurface the extreme ends of the levers are adapted to ride between the.dropping of the inner ends of the' levers and the raising thereof,without raising the inner ends of' the levers, thereby permitting thepin to drop'into engagement with the levers before' 80 the inner ends ofthe levers are raised;

VIn testimony that I claim the foregoing. asmy own, I have hereto aixed'my signature in the presence of two witnesses.

SYLVESTER O. GOULD. .Witnesses FRANK MIDDLETON, JOHN L. Woon.

